The Church with the Gentiles in it, is Israel Elect, the Mystery revealed, for Isaiah foretold of this, even calling the Gentiles Gods chosen, a People formed for Himself, observe this Prophecy depicting the Gentiles Isa 43:19-21
19 Behold, I will do a new thing; now it shall spring forth; shall ye not know it? I will even make a way in the wilderness, and rivers in the desert.
20 The beast of the field shall honour me, the dragons and the owls: because I give waters in the wilderness, and rivers in the desert, to give drink to my people, my chosen.
21 This people have I formed for myself; they shall shew forth my praise.
The New Thing is the Mystery of the Gentiles Eph 2:15
Having abolished in his flesh the enmity, even the law of commandments contained in ordinances; for to make in himself of twain one new man, so making peace;
The wilderness is the gentile nations of the world, also the beast of the field, dragons and owls refer to gentiles people
Acts 10:12
12 Wherein were all manner of fourfooted beasts of the earth, and wild beasts, and creeping things, and fowls of the air.
These are His special Chosen ones for Himself from the gentiles Acts 15:14-19
14 Simeon hath declared how God at the first did visit the Gentiles, to take out of them a people for his name.
15 And to this agree the words of the prophets; as it is written,
16 After this I will return, and will build again the tabernacle of David, which is fallen down; and I will build again the ruins thereof, and I will set it up:
17 That the residue of men might seek after the Lord, and all the Gentiles, upon whom my name is called, saith the Lord, who doeth all these things.
18 Known unto God are all his works from the beginning of the world.
19 Wherefore my sentence is, that we trouble not them, which from among the Gentiles are turned to God:
God said this people[Gentiles] He formed for Himself
Look what God said earlier in Isa 43:1
But now thus saith the Lord that created thee, O Jacob, and he that formed thee, O Israel, Fear not: for I have redeemed thee, I have called thee by thy name; thou art mine.
19 Behold, I will do a new thing; now it shall spring forth; shall ye not know it? I will even make a way in the wilderness, and rivers in the desert.
20 The beast of the field shall honour me, the dragons and the owls: because I give waters in the wilderness, and rivers in the desert, to give drink to my people, my chosen.
21 This people have I formed for myself; they shall shew forth my praise.
The New Thing is the Mystery of the Gentiles Eph 2:15
Having abolished in his flesh the enmity, even the law of commandments contained in ordinances; for to make in himself of twain one new man, so making peace;
The wilderness is the gentile nations of the world, also the beast of the field, dragons and owls refer to gentiles people
Acts 10:12
12 Wherein were all manner of fourfooted beasts of the earth, and wild beasts, and creeping things, and fowls of the air.
These are His special Chosen ones for Himself from the gentiles Acts 15:14-19
14 Simeon hath declared how God at the first did visit the Gentiles, to take out of them a people for his name.
15 And to this agree the words of the prophets; as it is written,
16 After this I will return, and will build again the tabernacle of David, which is fallen down; and I will build again the ruins thereof, and I will set it up:
17 That the residue of men might seek after the Lord, and all the Gentiles, upon whom my name is called, saith the Lord, who doeth all these things.
18 Known unto God are all his works from the beginning of the world.
19 Wherefore my sentence is, that we trouble not them, which from among the Gentiles are turned to God:
God said this people[Gentiles] He formed for Himself
Look what God said earlier in Isa 43:1
But now thus saith the Lord that created thee, O Jacob, and he that formed thee, O Israel, Fear not: for I have redeemed thee, I have called thee by thy name; thou art mine.